"After testing samples of the lesions and Dede's blood, Dr Anthony Gaspari of the
University of Maryland concluded that his affliction is caused by the Human Papilloma Virus (HPV), a fairly common infection that usually causes small warts to develop on sufferers."
"
Dede's problem is that he has a rare genetic fault that impedes his immune system, meaning his body is unable to contain the warts.
The virus was therefore able to "hijack the cellular machinery of his skin cells", ordering them to produce massive amounts of the substance that caused the tree-like growths known as "cutaneous horns" on his hands and feet.
Dede's counts of a key type of white blood cell are so low that Dr Gaspari initially suspected he may have the Aids virus."
via
http://www.telegraph.co.uk/news/main...2/wtree112.xml